Toyota Sienna Service Manual: Terminals of ECU

Toyota Sienna Service Manual / Cruise control / Dynamic laser cruise control system / Terminals of ECU

1. CHECK DISTANCE CONTROL ECU

CHECK DISTANCE CONTROL ECU

Reference: waveform 1

HINT:

Terminal: LRDD - SGND
Gauge set: 2 V/DIV., 10 ms./DIV.
Condition: ignition switch in the ON position

CHECK DISTANCE CONTROL ECU

Reference: waveform 2

HINT:

Terminal: LRRD - SGND
Gauge set: 2 V/DIV., 5 ms./DIV.
Condition: ignition switch in the ON position

2. CHECK ECM

CHECK ECM

If the value is not within the specified range, the ECM may have a malfunction.

3. CHECK LASER SENSOR

CHECK LASER SENSOR

Reference: waveform 1

HINT:

Terminal: LRDD - SGND
Gauge set: 2 V/DIV., 10 ms./DIV.
Condition: ignition switch in the ON position

CHECK LASER SENSOR

Reference: waveform 2

HINT:

Terminal: LRRD - SGND
Gauge set: 2 V/DIV., 5 ms./DIV.
Condition: ignition switch in the ON position

4. BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

Problem symptoms table

HINT: Use the table below to help determine the cause of the problem symptom. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Re ...

Diagnosis system

1. DIAGNOSIS FUNCTION The diagnosis function makes the light and the multi-information display come on, and the CRUISE main indicator light blink as shown in the illustration. When ...

Other materials:

Installation
1. INSTALL REAR AXLE BEAM DAMPER (a) Install the rear axle beam damper to the rear axle beam assembly. 2. INSTALL REAR AXLE CARRIER BUSH LH (a) Align the matchmarks on the axle beam assembly with the 2 notches of a new bushing and temporarily install the bushing to the rear axle beam assem ...

Steering Pad Switch Circuit
DESCRIPTION This circuit sends an operation signal from the steering pad switch to the radio receiver. If there is an open in the circuit, the audio system cannot be operated using the steering pad switch. If there is a short in the circuit, the same condition as that when the switch is ...

Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)
DESCRIPTION If AUTO UP operation does not fully close the power window, the following conditions may be the cause. The reset of the power window motor has not been completed, resulting in activation of the jam protection function. The memory of the power window switch misse ...